From list-managers-owner@greatcircle.com Wed Jun 9 15:57:12 2010
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From: Joey Kelly
To: list-managers@greatcircle.com
Subject: blocklist problem
Date: Wed, 9 Jun 2010 17:38:49 -0500
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Hi.
I have a large announcement list (over 15k subscribers) that I'm trying to
migrate to Majordomo, and I'm getting blacklisted by several large ISPs:
Yahoo: 3066 addresses
AOL: 2346 addresses
Hostmail: 1374 addresses
...et cetera.
I get several errors, but the most obvious one is that I'm sending to too many
recipients at one time.
mailq (postfix) tells me that I have about 8k outbound recipients sitting in
my queue, every time I try to send to the list. Begging to get off the
various blacklists only gets me blacklisted again as soon at the postfix
tries to flush the queue.
Suggestions?
--
Joey Kelly
Minister of the Gospel and Linux Consultant
http://joeykelly.net
504-239-6550
From list-managers-owner@greatcircle.com Wed Jun 9 16:56:15 2010
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From: Bob
To: Joey Kelly
cc: list-managers@greatcircle.com
Subject: Re: blocklist problem
In-Reply-To: <201006091738.49953.joey@joeykelly.net>
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References: <201006091738.49953.joey@joeykelly.net>
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I don't think that this is a majordomo thing. Blacklisting usually
consists of the ip that is distributing the mails. I have been using
majordomo since the 90's and have never been blacklisted by anyone
including the 3 isp's you mentioned below. Actually a high volume of my
list is consists of aol, yahoo, hotmail, gmail, etc. I also noticed that
when I installed dkim milter that the few problems I did have went away.
Alot of these places you may be talking of may be assuming its spam. Even
if what I speak is not the case, try dkim milter and/or domainkeys. Its
all free and does help with the spam senario.
Bob
On Wed, 9 Jun 2010, Joey Kelly wrote:
> Hi.
>
> I have a large announcement list (over 15k subscribers) that I'm trying to
> migrate to Majordomo, and I'm getting blacklisted by several large ISPs:
>
> Yahoo: 3066 addresses
> AOL: 2346 addresses
> Hostmail: 1374 addresses
>
> ...et cetera.
>
> I get several errors, but the most obvious one is that I'm sending to too many
> recipients at one time.
>
> mailq (postfix) tells me that I have about 8k outbound recipients sitting in
> my queue, every time I try to send to the list. Begging to get off the
> various blacklists only gets me blacklisted again as soon at the postfix
> tries to flush the queue.
>
> Suggestions?
>
> --
> Joey Kelly
> Minister of the Gospel and Linux Consultant
> http://joeykelly.net
> 504-239-6550
>
From list-managers-owner@greatcircle.com Thu Jun 10 07:03:24 2010
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Subject: Re: blocklist problem
From: Vick Khera
In-Reply-To: <201006091738.49953.joey@joeykelly.net>
Date: Thu, 10 Jun 2010 09:56:52 -0400
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References: <201006091738.49953.joey@joeykelly.net>
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On Jun 9, 2010, at 6:38 PM, Joey Kelly wrote:
> I get several errors, but the most obvious one is that I'm sending to =
too many=20
> recipients at one time.
Are they rejecting your mail or just throttling you?
If this is a new IP address from which you're sending, they need to =
first build up some reputation of whether those mails are wanted by =
their customers. Over time, the mail will go through. What you may =
have to do is configure postfix to trickle the mail out to these places, =
say by limiting it to 1 concurrent connection per destination domain.
You do this by setting a transport map to map "yahoo.com" to the =
transport "trickle". Then in master.cf you create a copy of the "smtp" =
line and change "smtp" to "trickle", and then in main.cf you set =
"trickle_destination_concurrency_limit =3D 1". The postfix list will =
provide more help if you need it.
Once yahoo/aol/gmail/hotmail get used to your IP, you can bump up the =
concurrency until ultimately you don't need the throttle anymore.
That and using DKIM is a great idea. Just be sure to strip any DKIM on =
the incoming messages first so as not to confuse the remote verifiers.
Your other option is to use a list hosting service who has taken care of =
all the ISP relations for you.=
From list-managers-owner@greatcircle.com Thu Jun 10 07:29:39 2010
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From: Joey Kelly
To: list-managers@greatcircle.com
Subject: Re: blocklist problem
Date: Thu, 10 Jun 2010 09:20:40 -0500
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On Thu June 10 2010 8:56 am, Vick Khera wrote:
> On Jun 9, 2010, at 6:38 PM, Joey Kelly wrote:
> > I get several errors, but the most obvious one is that I'm sending to too
> > many recipients at one time.
>
> Are they rejecting your mail or just throttling you?
The ISPs are throttling me, but barracuda users are outright blocking me.
> If this is a new IP address from which you're sending, they need to first
> build up some reputation of whether those mails are wanted by their
> customers. Over time, the mail will go through. What you may have to do
> is configure postfix to trickle the mail out to these places, say by
> limiting it to 1 concurrent connection per destination domain.
>
> You do this by setting a transport map to map "yahoo.com" to the transport
> "trickle". Then in master.cf you create a copy of the "smtp" line and
> change "smtp" to "trickle", and then in main.cf you set
> "trickle_destination_concurrency_limit = 1". The postfix list will provide
> more help if you need it.
Ahh... that's what I was looking for... some way to throttle SMTP. Thanks.
>
> Once yahoo/aol/gmail/hotmail get used to your IP, you can bump up the
> concurrency until ultimately you don't need the throttle anymore.
>
> That and using DKIM is a great idea. Just be sure to strip any DKIM on the
> incoming messages first so as not to confuse the remote verifiers.
I was planning on setting up SPF, but the more the merrier.
--
Joey Kelly
Minister of the Gospel and Linux Consultant
http://joeykelly.net
504-239-6550